Oil-burner.



E. B. VALOT. OIL BURNER. APPLICATION FILED APR. 20, i914.

Patented Apr. 20, 1915.

THE NORRIS PETERS 60.. PHOTO LITHO- WASHING WM 0. r

EDWARD B. VALOT, OF ST. LOUIS, MISSOURI.

OIL-BURNER.

To all whom it may concern Be it known that I, EDWARD B. VALo'r, a citizen of the United States, and a resident of the city of St. Louis and State of Missouri, have invented a new and useful Improvement in Oil-Burners, of which the following is a specification.

This invention relates to oil burners of the type which are intended to be installed in domestic stoves made to burn solid fuel to convert such stoves into oil stoves.

The object of this invention is an improved oil burner which burns with a smokeless flame, which can be readily started with a match, and which .will not blow or burn unevenly.

The invention consists in a burner having a large generating chamber adapted for controlling automatically to a considerable extent the fiow of oil and the pressure of the gas generated therefrom.

Further details of the invention are disclosed in connection with the following description of the embodiment thereof illustrated in the accompanying drawings.

What the invention consists in is more particularly defined in the appended claims.

In the drawings, in which like characters designate like parts in the several views, Figure 1 is a vertical section through the firebox of a stove, showing my oil-burning apparatus applied thereto, the burners and piping being in side elevation; Fig. 2 is a plan view of the same, one of the burners being shown partly in horizontal section with the top portion removed; and Fig. 3 is a vertical section on the longitudinal axis of a burner.

In Figs. 1 and 2 of the drawings, my improved oil-burning apparatus is shown installed in an ordinary domestic coal or wood stove 11, such as is commonly used in the kitchen and laundry for household purposes. The apparatus comprises a deep sheet-iron pan 12 which may rest directly on the grate 13 of the stove, or which may be blocked up on the grate by a couple of half brick, or other suitable means, to position the tops of the two burners 14 the desired distance below the stove lids. Separate pipes 15 conduct the oil to the two burners, an angle valve 16 in each pipe serving to regulate the flow of oil to each burner. The two angle valves are connected by means of a T to a pipe 17, which conducts the oil from a suit- Speeification of Letters Patent.

Patented Apr. 2d, 1915.

Application filed April 20, 1914. Serial No. 833,036.

able reservoir tank, or other source of supply. The valves 16 and pipe 17 are outside of the stove, and the pipes 15 pass through a sheet-iron plate 18, which takes the place of the usual fire box door, into the fire box. The plate 18 supports the pipes and retains them in place. The burners 14 rest on the bottom of the pan 12, which is kept partly filled with water. The line 19 in Fig. 1 indicates a suitable water level.

The burner 14 consists of an inverted U tube with its top branch enlarged sidewise at its middle to form a generating chamber 20. The lower end 21 of one of the vertical branches of the inverted U tube is extended inwardly and its extremity is about under the generating chamber 20. In the top of this inward extension 21 is an orifice 22 from which the gas can flow upwardly and when ignited the flame will impinge on the lower side of the enlargement 20 and be spread out in all directions, thereby furnishing a uniform heat over the under side of the stove lid. A priming cup 23 surrounds the orifice 22, the top edge of the cup being slightly below the edge of the orifice. The orifice is spaced above the top wall of the extension portion 21 of the U tube, and a considerable distance below the horizontal middle branch of the U tube. The vertical branch of the U tube opposite the extension 21 has its lower extremity 24 tapped to re ceive the end of the pipe 15. Legs 25 are formed on the lower extremities 21 and 24 for supporting the burner. At suitable points along the inverted U tube inspection holes are made which are normally closed by screw plugs 26. V

The operation of the device is as follows: Upon opening the valve 16 oil flows through the pipe 15 and fills the portion 24 of the U tube and the vertical branch above it. Ultimately the oil flows over into the opposite vertical branch, and fills it up to the level of the orifice, after which it flows into the cup 23. When the oil starts to flow into the cup it is ignited with a match and burns as fast as it flows in. The heat developed warms the generator chamber 20, and as there is only a thin film of oil over its bottom, this oil is quickly vaporized. The vapor pressure thus produced continues to drive oil from the portion of the U tube above the extension 21 into the cup until the level of oil falls below the top wall of the extension 21,

ignited and burned. The inside dimensions of the U tube are comparatively large, and the oil trapped in the U tube when gasification starts is sufiicient to complete the starting operation. 'lhe pipe 15 and portion 24 r of the U tube are kept cool enough by the water in which they are immersed to prevent appreciable generation of gas until the oil reaches the horizontal portion of the U tube. Excessive generation of gas will operate to check the flow of oil by reason of the increase in pressure caused thereby, but if the oil supply valve is properly set the gen eration of gas will be very regular, and proportional to the amount of oil supplied to the generator chamber. When the device is in operation, generation occurs almost instantaneously upon the particles of the thin film of oil reaching the chamber 20.

It is evident that modification in the forms and arrangement of the several parts of the apparatus can be made Without departing from the invention, and the invention is not limited to the precise forms and arrangement illustrated.

I claim the following as my invention:

1. A water pan, an upright burner partly immersed in said water pan, said burner having an orifice and a large generating chamber above the water level, said generating chamber being in line with the discharge from said orifice, and a duct leading to said orifice from said generating chamber and having a large capacity for retaining fuel'during the starting operation.

2. A water pan, an upright burner partly immersed in said water pan, said burner having an orifice and a large generating chamber above the water level, said generating chamber being over said orifice, and a duct leading to said orifice from said generating chamber and partly immersed in said water pan, said duct having a large capacity for retaining fuel during the starting operation.

3. A water pan, an upright burner partly immersed in said water pan, said burner having an orifice and a large generating chamber above the water level, the lower surface of said generating chamber being horizontally disposed over said orifice, and a duct leading to said generating chamber and having a large capacity for retaining liquid fuel, said duct having its upper end level with the lower surface of said generating chamber and its lower end immersed in said water pan.

1. A water pan an upright burner partly immersed in sai water pan, said burner having an orifice and a generating chamber having a large fiat heating surface horizontally disposed above the water level, and a duct for liquid fuel leading to said generating chamber, said duct having its upper end level with said heating surface of said generating chamber and its lower end immersed in said water pan.

5. A burner comprising an inverted U tube having an enlarged chamber in its horizontal branch, one of the vertical branches of said U tube having an inward extension at its lower end, the extremity of said inward extension having an orifice in its upper wall, a burner tip projecting upwardly from said orifice, a cup surrounding said burner tip and positioned below the extremity thereof and above said extension, and the other of the vertical branches of said U tube having an oil inlet at its lower end.

6. A burner comprising an inverted U tube having an enlarged chamber in its horizontal branch, one of the vertical branches of said U tube having an inward extension at its lower end, the extremity of said inward extension having an orifice in its upper wall, a burner tip projecting upwardly from said orifice, a cup surrounding said burner tip and positioned below the extremity thereof and above said extension, and the other of the vertical branches of said U tube having an oil inlet at its lower end, said U tube being of large capacity.

Signed at St. Louis, Missouri, this 17th day of April, 1914.

EDXVARD B. VALOT.

Witnesses:

OSCAR W. Hoorraw, A. M. HOLCOMBE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

